Holocene deglaciation and glacier readvances on the Fildes Peninsula and King George Island (Isla 25 de Mayo), South Shetland Islands, NW Antarctic Peninsula ...

• Main Authors: Heredia Barión, Pablo, Roberts, Stephen J, Spiegel, Cornelia, Binnie, Steven A, Wacker, Lukas, Davies, Joanna, Gabriel, Imogen, Jones, Vivienne J, Blockley, Simon, Pearson, Emma J, Foster, Louise, Davies, Sarah J, Roland, Thomas P, Hocking, Emma P, Bentley, Michael J, Hodgson, Dominic A, Hayward, Chris L, McCulloch, Robert D, Strelin, Jorge A, Kuhn, Gerhard
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: SAGE Journals 2023
• Subjects: Geography; History; 25 de Mayo; Antarctic; Antarctic Peninsula; Fildes; Fildes peninsula; isla 25 de Mayo; King George Island; South Shetland Islands; Antarc*; Ice cap; Isla 25 de Mayo
• Online Access: https://dx.doi.org/10.25384/sage.c.6491974; https://sage.figshare.com/collections/Holocene_deglaciation_and_glacier_readvances_on_the_Fildes_Peninsula_and_King_George_Island_Isla_25_de_Mayo_South_Shetland_Islands_NW_Antarctic_Peninsula/6491974

To provide insights into glacier-climate dynamics of the South Shetland Islands (SSI), NW Antarctic Peninsula, we present a new deglaciation and readvance model for the Bellingshausen Ice Cap (BIC) on Fildes Peninsula and for King George Island/Isla 25 de Mayo (KGI) ~62°S. Deglaciation on KGI began after c. 15 cal. ka BP and had progressed to within present-day limits on the Fildes Peninsula, its largest ice-free peninsula, by c. 6.6–5.3 cal. ka BP. Probability density phase analysis of chronological data constraining Holocene glacier advances on KGI revealed up to eight 95% probability ‘gaps’ during which readvances could have occurred. These are grouped into four stages – Stage 1: a readvance and marine transgression, well-constrained by field data, between c. 7.4 and 6.6 cal. ka BP; Stage 2: four probability ‘gaps’, less well-constrained by field data, between c. 5.3 and 2.2 cal. ka BP; Stage 3: a well-constrained but restricted ‘readvance’ between c. 1.7 and 1.5 cal. ka BP; Stage 4: two further minor ...